Brake-beam.



F. E. SCHWENTLER.

BRAKE BEAM.

APPLICATION FILED SEPT. 16. 1914.

3,225.59. Patented May 15, 1917.

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FRANCIS E. SCH'WENTLER, OF ST. LOUIS,l MISSOURI, ASSIGNOR TO AMERICAN BRAKE COMPANY, OF SKT. IJOUIS, MISSOURI, A CORPORATION 0F MISSOURI.

BRAKE-BEAM.

Specification of Letters Patent.

Patented May i5, 1917 Application led September i6, 1914. Serial No. 861,971.

To all 'whom it' may concern:

Be it known that I, FRANCIS E. SGHWENT# LER, a. citizen of the United' States, and a resident of St. Louis, in the State of Missouri, have -invented a certain new and useful Improvement in Brake-Beams, of which improvement the following is a specioation.

rllhis invention relates to brake beams -for railway vehicles, and hasvfor one of its objects to .provide an improved construetion which may be built up of commercial ymetal sections with end pieces and connecting lugs suitably attached thereto, and another' object is toprotirle an improved form of connections for attaching the hangers at the ends of the beams.

ln the Vaccompanying drawings: Figure l is a plan of one form of my improvedbrake beam construction; Fig. 2, a longitudinal section of one end of same; Fig. 3, a transverse section taken on the line 3-3 of Fig. l; Figs. It and 5, a plan and longitudinal section, respectively, of the end portion of a brake beam showing a modified construction; Figs. 6 to 13, corresponding l,

f' members views showing other modifications; and

Fig. 14, a transverse section taken on the line idr- 14 of Fig. l2.

As shown in Figs. l to 7, my improved brake beam is formed of a bult. up construetion comprising a body or beam portion, A, cfa rolled metal section, such as an I beam, with the end castings'or forgings, B, attached thereto, and having the trunnion or pin, C, for connection with the hanger or other support. The lugs, D, which may also be formed of' cast or forged metal, are secured to the beam near the end members for the purpose of pivotally attaching the brake beam levers of the'brake rigging thereto.

As shown in Figs.. et and 5, the end members are formed with pockets, E, closed at the bottom and one side, the pin, C, being supported in bothlthe outer and inner walls of the pocket, thereby .giving double shearing strengggth.T In Figs. 6 and 7," the pocket portion' of the end member is closed at the bottom and both sides..

In the modification shown in Figs. 8 to 14, the beam portion is formed of two rolled channel sections, A1, with the shank of the end member, B, riveted between the same. In Figs. l0 and ll, the pocket portiomE, of the end forging is closed at the bottom .and both sides, while in Figs. l2 and 13, it is open at the bottom. In this latter modification the brake lever lugs', D1, are shown as formed integral with the end members, which may be done where the brake. beam levers are located near enough to the ends of, the brake beams.

vn all of the constructions"having pockets it will be seen that the pin is supported in double shear, and that the han ers may be readily attached and detacheu when de sired.

Having now described my invention, what I claim as new and desire to secure by Letters vPatent is:

l. A brake beam comprising a beam portion formed of a rolled metal section, end members secured thereto and projecting beyond the ends of said sections, pivot pins on said' end members and brake lever lugs also secured to said beam.

2. A brake beam comprising a beam portion formed of a rolled metalY section, end secured thereto and having pockets, said end members projecting beyond the endsfof said section, and pins supported in both theiinner and outer vwalls ofa said pockets,

. 3. A brake beam comprising a beamportion formed of -a rolled metal sec.-on, end members secured thereto and having pockets closed at the bottom and one side, and hanger pins supported in the walls of said pockets. Y

4. A brake beam comprising a beam portion formed of rolled Lchannel sections, end members riveted between the webs of said channel sections and carrying pivot pins, 

